Improvement in bobbins



-w. I NG HAM.

Bobbins.

10.154332. I Patented Aug.25,1874.

UNITED STATES WILLIAM INGHAM, 0F PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN BOBBINS.

Specification forming part of Letters Patent No. 154,332, dated August25, 1874; application filed April 29, 1874. r

To all whom it may concern:

Be it known that I, WILLIAM INGHAM, of the city and county of Providenceand State of Rhode Island, have invented an Improved Spool, of which thefollowing is a specification:

The object of my invention is to improve the construction of spools bymaking the pivot in one piece with the cap that is fastened on the endof the barrel, and providing the pivot with a screw-threaded enlargementby which to attach the spool-head.

In the drawings, Figure 1 is a spool, shown one end in section, that themode of applying the cap may be seen. Fig. 2 shows the cap with thepivot, separate from the spool, top view.

Ais the barrel. 0 c are the heads. 01 is the cap, which consists of thelongitudinal flange or ring that goes on the barrel of the spool, and aplate or flange placed across its end in the plane of the head, all madeor cast in one piece, together with the pivot d that projects from thecenter of this plate or flange. .This cap and pivot may be made ofmalleable iron, or any other suitable metal. The pivot, where it joinsthe cap, is enlarged for a short distance, and has a screw-thread, 0,made on it,

onto which the wooden head of the bobbin is screwed, and kept fromcoming off by a washer on the outside, with a pin put through the pivot;or the head maybe held on by screws put through the flange from theinside into it. A screw-thread is also made on the inside of the cap, sothat it may be screwed onto the bobbin-barrel.

For the purpose of making the inside of the head level, the top flangeof the cap is let into a recess in the head. The barrel of the spool isalso turned down where the cap is screwed on to make the surface levelbetween the two heads.

Making the pivot and cap of one piece, and increasing the hold of thecap upon the barrel and head, will in a great degree obviate the maintroubles connected with the use of the bobbinviz., the working loose ofthe pivot, and the loosening and breaking of the, head.

I claim as my invention- Thecap and pivot made in one piece,substantially as described, in combination with the barrel A and head a,the pivot being provided with a thread, 6, for retaining the head, forthe purpose set forth.

WILLIAM INGHAM.

Witnesses:

JOHN GLEDHILL, JOHN KIRKWOOD.

